The popularity of the Internet has shrunk the world to the size of a neighborhood and keeping track of all those contacts has never been so important. Be it to chat with a friend across the globe and reach a business associate across town, we depend on the accuracy of our email address book . For businesses, no matter their size, keeping an accurate address book database is as important as managing the Rolodex used to be, and a shared address book eased the follow ups on potential clients. Either for home or office, it' more important than ever to make an address book backup at least once a week, and thus save ourselves future headaches. To manage the list of those needful Websites one may consider the option of an online address book , usually updated regularly according to our specific needs. The address book is the one tool we use on a daily basis, if only to share the latest joke with friends from our Thunderbird or outlook personal address book . And if we're of the heedless type, some address book software include a calendar to remind us of the special events over the year. No more excuses to forget birthdays.